Orbit control at the ALS based on sensitivity matrices

Author

Nishimura, H. ; Schachinger, L. ; Ohgaki, H.

Author_Institution

Lawrence Berkeley Lab., California Univ., Berkeley, CA, USA

Volume

4

fYear

1995

Firstpage

2247

Abstract

A third-generation synchrotron-light source storage ring requires accurate orbit correction because its lattice is very sensitive to magnet imperfections and misalignments. If model-based control is used, calibration of this model is required in advance. Therefore, it is preferable to prepare some kind of model-free orbit control scheme that is complementary to model-based control. A sensitivity matrix (Smatrix) works effectively as the kernel of a model-free orbit control system for a given optics of a lattice. This paper describes recent efforts in this respect at Advanced Light source

Keywords

accelerator control systems; electron accelerators; high energy physics instrumentation computing; position control; sensitivity analysis; storage rings; Advanced Light Source; magnet imperfections; magnet misalignments; model-based control; model-free orbit control scheme; orbit correction; sensitivity matrices; sensitivity matrix; third-generation synchrotron-light source storage ring; Calibration; Collaboration; Extraterrestrial measurements; Laboratories; Lattices; Magnetic analysis; Optical sensors; Orbital calculations; Storage rings; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1995., Proceedings of the 1995

Print_ISBN

0-7803-2934-1

Type

conf

DOI

10.1109/PAC.1995.505513

Filename

505513